Pump



Sept. 28, 192e.

G. sTAUNToN PUMP Filed Nov. 9, 1925 Irv/Em DE Gray SZzzlzzZaZz Patented Sept. 280, 19h26.

UNITED STATES PATENT OFFICE.

GRAY sTAUNToN, or NEW HAVEN,

CONNECTICUT, ASSIGNOR TO VACUUM SEAL COM PANY, INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK. y.

PUMP.

- AppIeation led November 9, 1925. -Serial No. 67,749.

The invention relates to improvements in pumps. .Y y

One of the objects ofthe invention is to improve pumps adaptable for sealing jars, as more particularly disclosed in my co-pending application, Serial No. 41,003, filed July 2, 1925. Y

Another object is to generally improve the construction of hand operated vacuum pumps to render them convenient in use, durable and eflicient.

Other and more specific objects, benefits and advantages will hereinafter appear.

On the accompanying drawings, forming a part hereof:

Figure 1 is an elevation of a pump show-l ing it applied to a jar to be sealed.

Figure 2 is an enlarged view similar to Figure 1 showing parts in section.

Figure 3 is a further enlarged view of a transverse section taken on line III-HI of Figure 1.

Figure 4 is a transverse section taken on line lVvIV of Figure 1.

Figure 5 is an enlarged section taken through the bottom end of the pump similar to that shown in Figure 2.

In all the views the same reference characters are employed to indicate similar parts.

As shown on the drawings:

The pump 10 is shown applied to a jar 11, in Figures 1 and 2. The pump barrel consists of a tube 12 which may be of any suitable length. At the lower end of the barrel and secured therein is a plug 13 having an opening 14 and having a downwardly extending threaded nipple 15. The nipple is threaded on the outer surface to accommodate a nut 16. An enlarged terminal body 17 is provided with a peripheral fiange 18 to overlie the jar 11. A plunger 19 is reciprocatable in the barrel 12 by the plunger-rod 20. The upper end of the plunger rod 20 terminatesin a handle 21 so formed as to be conveniently grasped by inserting the fingers in the orifice 22 and lifting the plunger and rod 20 upwardly of the barrel 12. In the orifice 14 of the plug 13 is a valve 23 for closing the port or perforation 24 in said plug. Surrounding the upper end of the opening 14 in the plug 13 is a rounded protuberance 25. After the ball valve 23 is placed in the opening 14 above the upper end of the port 24, a part of the protuberance 25 is forced downwardly at 26 by application of a chisel, or the like, which is set to deform that partlof thev protuberance surrounding the opening 14 and which drives in apart 26 to provide an obstruction for exit of the ball valve 23 so that it may not leave the recess or opening 14 in which it is normallyv located.

An open coiled spring 27 is placed inside of the barrel 12 of the pump with its lower end resting upon the plunger, as

clearly shown in Figure 2. The plunger contacts the spring and the spring serves as a cushion to the upstroke of the piston and rod when the spring strikes the cap which closes the upper end of the barrel 10. VFrom vthe flange 18 of the body 17 vare cut notches from which parts are forced inwardly to form shoulders 28 which are to rest upon the upper edge of the jar 11 when the pump is in proper position'thereon. There areV three 0r more of these shoulders equally spaced circumferentially, as clearly shown in Figure 4. A skirt 29, of soft rubber, surrounds the outer surface of the liange 18 and is held thereon by a strap 30 which may be of tin, or the like, and which is provided with a buckle 31 with one end 32 of the strap bent under, and the other end 33 bent over the strap. This strap holds the rubber skirt firmly in place on the flange 18 and is intended to encompass the upper edge`of the jar 11 when the jar is to be sealed. The jar has a clo'sure or cap 34 which carries a sealing ring 35.

When the jar is to be sealed, the handle 21 is vigorously raised. This causes the valve 23 to raise and open the port 24 which permits extraction of the air from the space 35 under the body 17 and above the cap or cover 34. When the handle 21 is depressed, the air contained above the valve of the pump will escape beyond the piston and the valve 22 will close and prevent the air from reentering the space 35. One or two reciprocations of the plunger may be necessary to entirely exhaust the jar 11. The spring 27 prevents the plunger 19, on the rod 20, from violently contacting with the barrel closure and thereby injuring said plunger. The spring also, when compressed, tends to give a quick downward lll) plunger et the initial part .and lower its position in obedience to the reeiprocations of the plunger 19 in the pump The pump barrel l0 'is secured to the body 17 by the unt 16 which is threaded on the nipple l5 contacting the gasket 26, makes a good tight joint between the parte.

I em aware that many changes may be mede and numerous details of construction may be varied through a Wide range Without departing from the principles of this invention, and I therefore, do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art.

l claim as my invention:

pump, comprising a` barrel, a reciprocable plunger therein7 a disk body larger than the said barrel Vhaving a 'flange on its outer edge and Secured to said barrel, supports integral With and extending inwardly from the seid flange to support the pump on the upper edge off a jar, and a. HeXible skirt overlying and fixed to said flange and adapted for sealing engagement with the side well of said jar.

In testimony whereof` l have hereunto 30 subscribed my neme.

GRAY eTAUNC-oN. 

